Official NHA Assessment

Race 5: RACEHORSE OWNERS ASSOCIATION MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Metar
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 8
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Beneath The Moon     2    56.0    1    0.00     0.0   -     60           6     +6
2    Metar                3    60.0    2    0.50     1.0   71    71           71    +0
2    Global Avenue        3    60.0    2    0.50     1.0   -     71           71    +71
4    Air Of Royalty       3    60.0    4    2.75     1.0   65    68           68    +3
5    Island Beauty        3    60.0    5    2.95     1.0   59    68           68    +9
6    Wayward Girl         3    60.0    6    3.25     1.0   62    68           68    +6
7    Chroniclesofnania    5    56.0    7    5.50     0.0   -     60           60    +60
8    Mothership           5    56.0    8    7.75     0.0   -     60           60    +60
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Beneath The Moon - 59 6 +53 0.0 -
2 Metar Line 71 73 71 +2 1.0
2 Global Avenue - 64 71 -7 1.0 -
4 Air Of Royalty 65 55 68 -13 1.0 -
5 Island Beauty 59 63 68 -5 1.0 -
6 Wayward Girl 62 56 68 -12 1.0 -
7 Chroniclesofnania - 60 60 ✓ Match 0.0 -
8 Mothership - 50 60 -10 0.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points